Yet another large drugmaker has made a commitment to release clinical trial data. The latest to do so is Sanofi, which will join an effort begun last year by GlaxoSmithKline to establish a web site where researchers can request study information. In announcing its decision, Sanofi also expressed support for a data sharing plan declared last summer by the pharmaceutical industry trade groups in the US and Europe, which want to offer an alternative to a more sweeping proposal being considered by the European Medicines Agency.